Outdoor Unit Fault - Fujitsu WATERSTAGE WS A050DD6 Series Maintenance Document

Split system single phase type

2.1.2 Outdoor Unit Fault

When the system is switched back on after a power
outage, the Hydraulic Unit may display fault 370 for a
few tens of seconds. This is not a serious problem. It
simply means that the outdoor unit is running its
Maintenance Document 1589-3
tests. Once the tests have been completed, the fault
should disappear.
Faults are coded by LED located on the hydraulic unit
interface board (see page 5)
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